Illuminator for ovens



A. GAMPE. ILLUMINATOR FOR OVENS.

(No Model.)

No. 250,142. Patented Nov. 29,1881.

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UNITED STATES PATENT OFFICE.

AUGUST GAMPE, OF PHILADELPHIA, PENNSYLVANIA.

lLLUMlNATOR FOR OVENS.

SPECIFICATION forming part of Letters Patent No. 250,142, dated November 29, 1881,

' Application filed Ap1i115, issi. (No model.)

To all whom 2t may concern:

Be it known that I, AUGUST GAMPE, a citizen of the United States, residing in the city and county of Philadelphia, and State of Pennsylvania, have invented a new and useful Improvement in Illuminators for Ovens, which improvemeutis fully set forth in the following specification and accompanying drawings, in which- Figure l is an outside face view, partly sectional, of the illuminator embodying my inveu tion. Fig. 2 is a side elevation thereof. Fig. 3 is a vertical section thereof in line 00 a, Fig. 1.

Similar letters of reference indicate corresponding parts in the several figures.

My invention consists of an illuminator having a frame which is adapted to be let into the wall of a bakers oven or other heating apparatus, and provided with a door which may be closed without displacing the illuminator, in order to guard the reflector and lamp or light during the operation of making the fire or heating the oven, &c.

It also consists in other improvements in said illuminators, as hereinafter set forth and claimed.

Referring to the drawings, A represents a metallic frame or exterior casin g of the illuminator, which is let into the wall of an oven or other heating apparatus, and has a sheet, B, of mica or other suitable transparent and heatprotecting material applied to it at the side toward the oven, whereby the interior of the oven may be viewed and inspected through the frame.

0 represents a box, which is fitted into the frame A, and has an interior reflecting-surface, as at a. To the frame A, at the side toward the oven, is hinged a door, D, which is raised and lowered from the top or bottom of the frame, or opened and closed from the side there of by means of a jointed lever, E, which is hinged to the door and projects outwardly, and

secured in position in the frame A by means of catches or clamps G, which are pivoted to the frame and overlap the edges of the box 0. This illuminator-box O flares inward, so that the light reflected from the inclined faces thus presented will be concentrated within the oven more effectively than would be possible if a square or cylindrical box were employed.

The operation is as follows: When the fire is being made or the oven heated the door D is closed, so as to shield the transparent sheet B and the interior of the box 0 from the effects of flame and heat, the closing of the door being accomplished by withdrawing the lever E. When the oven is in condition to be used and requires illumination, the door is opened, and a lamp, gas-burner, or the like placed in the portion 0 of the box, the effect of which is to reflect the light into the oven, and thus the condition of the baking, 850., may be readily seen through the usual door of the oven, or through the box.

Should the box 0 be required to be cleansed or removed from the heat, the clasps or fastenings G are rotated or released, and thus the box may be withdrawn from the frame A, the subsequent restoration of said box to the frame being readily accomplished.

The main length of the lever E is guided on the side of the frame A and rested on a pin, H, projecting horizontally inward from said side. Should it be desired to raise the door higher than shown in Fig. 2, the lever is moved laterally clear of the pin H and lowered, thus increasing the leverage or throw of said lever and correspondingly raising the door.

Havingthus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The inwardly-flaring illuminator-box 0, having an interior reflecting-surface, in combination with frame A, to which it is attached at the inner end, and door F at its outer end, substantially as set forth.

2. The lever E, guided in the side of frame A, in combination with said frame, the in wardly-opening door I), and the illuminator-box G, substantially as set forth.

3. The inwardly-flaring illuminator-box G, in combination with frame A and clasps G, whereby said box and frame are detaohably secured, substantially as set forth.

AUGUST GAMPE.

Witnesses:

JOHN A. WIEDERsHEIM, A. P. GRANT. 

